Shield tunneling machine core component detection method and device

Abstract

The invention discloses a method and a device for detecting a core component of a shield tunneling machine, and the method comprises the steps: in a valve group-sensor test mode, controlling a to-be-tested solenoid valve of a relay to act according to a valve group test action instruction, and judging whether the solenoid valve is normal or not according to the state and action of a valve head lamp of the solenoid valve; 4 mA to 20 mA sensing signals of the sensor are obtained, the sensing signals are fed back to the upper computer, a logic operation result is obtained after preset logic operation is conducted through the upper computer, and whether the sensor is normal or not is judged according to the displayed logic operation result; in the PLC module test mode, the tested module is used as a slave station and communicates with the master station control module so as to execute a digital quantity input module test, a digital quantity output module test, an analog quantity input module test and an analog quantity output module test; the DP / NET communication test mode comprises an encoder test sub-mode and a remote controller test sub-mode. Quality problems and assembly problems of electrical core components of the shield tunneling machine can be found in advance, faults can be checked in time, and the quality and efficiency during joint debugging of the whole machine are guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of shield machine detection, and particularly relates to a method and device for detecting core components of a shield machine. Background Art

[0002] At present, when a tunneling machine undergoes remanufacturing after a period of use, it is necessary to conduct a detailed assessment of the working status and performance of the components that play a key role in the electrical system to determine whether they can continue to be used or what degree of repair or replacement is required to ensure that the remanufactured tunneling machine can operate normally and efficiently.

[0003] However, in the prior art, generally a static evaluation method is adopted, which can only control the quality of core components from the appearance of components and the assembly process. The assembly quality cannot be dynamically inspected, and there are many uncontrollable factors. During the repair process of remanufactured equipment, detecting the electrical core components and pre-controlling the quality are the key factors for improving the equipment assembly efficiency and reducing costs. Therefore, there is an urgent need to develop a technical solution for detecting core components of a shield machine. Summary of the Invention

[0004] For this reason, the present invention provides a method and device for detecting core components of a shield machine, which solves the problem that the traditional technology cannot effectively detect the electrical core components in the shutdown state of a tunnel boring machine.

[0005] To achieve the above object, the present invention provides the following technical solution: A method for detecting core components of a shield machine, including a valve group - sensor test mode, a PLC module test mode, and a DP / NET communication test mode; In the valve group - sensor test mode: Obtain the valve group test action instruction input by the user, control the solenoid valve to be tested of the relay to act according to the valve group test action instruction, and judge whether the solenoid valve is normal through the valve head light state and action of the solenoid valve; Obtain the 4mA - 20mA sensing signal of the sensor, feedback the 4mA - 20mA sensing signal of the sensor to the host computer, obtain a logical operation result through preset logical operation by the host computer, display the logical operation result through the function test area of the host computer, and judge whether the sensor is normal according to the displayed logical operation result; In the PLC module test mode: Take the module to be tested as a slave station and communicate with the master station control module to perform digital input module test, digital output module test, analog input module test, and analog output module test; The DP / NET communication test mode includes an encoder test sub - mode and a remote controller test sub - mode: During the encoder test sub - mode, it is detected whether the encoder is normal; during the remote control test sub - mode, it is detected whether the remote control is normal.

[0006] As an optimal solution for the detection method of the core components of the shield machine, in the valve group - sensor test mode, the 4mA - 20mA sensing signal of the sensor is fed back to the host computer, and the formula for obtaining the logical operation result through the preset logical operation of the host computer is: OUT = [((FLOAT(IN)-K1) / (K2 - K1))*(HI_LIM - LO_LIM)] In the formula, FLOAT(IN) is the analog - to - digital conversion value of the sensor; K1 is the minimum analog - to - digital conversion value of the signal conversion module; K2 is the maximum analog - to - digital conversion value of the signal conversion module; HI_LIM is the upper limit value of the sensor range; LO_LIM is the lower limit value of the sensor range; OUT is the obtained logical operation result.

[0007] As an optimal solution for the detection method of the core components of the shield machine, in the PLC module test mode, when performing the digital input module test, the power supply and relay output are controlled by the master station DO control module for testing, and the contact is fed back to the DI module for testing to judge the quality of the DI point; In the PLC module test mode, when performing the digital output module test, the power supply is controlled by the master station DO control module for testing, and the output signal is fed back to the master station DI module for testing to judge the quality of the DO point.

[0008] As an optimal solution for the detection method of the core components of the shield machine, in the PLC module test mode, when performing the analog input module test, the power supply is controlled by the master station DO control module for testing, and then the transmitter outputs a 0 - 10V or 4 - 20mA standard signal, which is fed back to the AI module for testing to judge the quality of the AI channel; In the PLC module test mode, when performing the analog output module test, the power supply is controlled by the master station DO control module for testing, and the output signal is fed back to the master station AI module for testing to judge the quality of the AO channel.

[0009] As an optimal solution for the detection method of the core components of the shield machine, during the process of detecting whether the encoder is normal in the encoder test sub - mode: Calibrate the standard - source encoder and the test encoder, and set all angles to zero; Fix the standard - source encoder and the test encoder on the encoder tooling; Connect the standard - source encoder, the test encoder to the master - station PLC for communication; Rotate the encoder tooling shaft and observe the angle display on the host computer; Compare the encoder angle of the host computer. If the test value is close to and stable with the standard value, the encoder is normal; if the deviation exceeds the set threshold, it is determined that the encoder is abnormal.

[0010] As an optimal solution for the detection method of the core components of the shield machine, during the detection of whether the remote control is normal in the test sub-mode of the remote control: Communicate the test remote control with the main station PLC. Set the normal communication range of the remote control. At the farthest point within the communication range, operate the remote control knob arbitrarily, and observe the status of the corresponding button lights on the remote control test interface of the host computer. If the corresponding button lights on the remote control test interface of the host computer respond, the receiver is normal; if the corresponding button lights on the remote control test interface of the host computer do not respond, continue to shorten the distance between the remote control and the receiver. If the corresponding button lights on the remote control test interface of the host computer never respond, it is determined that the receiver is damaged; if the button lights on the host computer respond within the set distance range, record the distance value and re-specify the actual communication range. Operate the remote control knob in sequence. If the corresponding function lights on the remote control of the host computer are on, the remote control is normal; if the corresponding function lights on the remote control of the host computer are not on, it is determined that the knob is damaged.

[0011] As an optimal solution for the detection method of the core components of the shield machine, the host computer is configured with a remote control test interface, and a function area for remote control button lights is designed in the remote control test interface. During the test, operate the remote control button arbitrarily, and judge whether the remote control function is normal through the status of the button lights on the host computer.

[0012] As an optimal solution for the detection method of the core components of the shield machine, the host computer is configured with a comprehensive test and monitoring interface, which is used to test and control the valve group, sensors and encoders. The comprehensive test and monitoring interface includes a valve group test area, a sensor test area and an encoder test area.

[0013] As an optimal solution for the detection method of the core components of the shield machine, the host computer is configured with an alarm interface, which is used to display the alarm and fault signals issued during operation; The host computer is configured with a history interface, which is used to record the operation parameters; The host computer is configured with a curve graph interface, which is used to depict the real-time curve of the given parameters and reflect the parameter change trend.

[0014] The present invention also provides a detection device for the core components of a shield machine, which is used for the above-mentioned detection method of the core components of a shield machine, and includes a detection platform, and the detection platform is configured with: A host computer, which is used to display or operate the specified test function Encoder test tooling, used for fixedly detecting the encoder to be tested; Remote control test area, used for detecting the remote control in the remote control test sub - mode; Master station PLC, used for communicating with the remote control and encoder to be tested; PLC module test area, used for testing the digital input module, digital output module, analog input module and analog output module of the PLC.

[0015] The present invention has the following advantages: It is provided with a valve group - sensor test mode, a PLC module test mode and a DP / NET communication test mode; In the valve group - sensor test mode: Obtain the valve group test action instruction input by the user, control the solenoid valve to be tested of the relay to act according to the valve group test action instruction, and judge whether the solenoid valve is normal through the valve head light state and action of the solenoid valve; Obtain the 4mA - 20mA sensing signal of the sensor, feedback the 4mA - 20mA sensing signal of the sensor to the upper computer, obtain a logical operation result through preset logical operation by the upper computer, display the logical operation result through the function test area of the upper computer, and judge whether the sensor is normal according to the displayed logical operation result; In the PLC module test mode: Take the module to be tested as a slave station and communicate with the master station control module to perform digital input module test, digital output module test, analog input module test and analog output module test; The DP / NET communication test mode includes an encoder test sub - mode and a remote control test sub - mode: Detect whether the encoder is normal in the encoder test sub - mode; Detect whether the remote control is normal in the remote control test sub - mode. The present invention can detect the electrical core components of the shield machine before the whole machine assembly, discover quality problems and assembly problems in advance, troubleshoot faults in time, and ensure the quality and efficiency during the whole machine joint debugging. Description of the Drawings

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0017] Figure 1 Schematic diagram of the shield machine core component detection method provided in the embodiment of the present invention; Figure 2 Schematic diagram of the valve group test principle in the shield machine core component detection method provided in the embodiment of the present invention; Figure 3Schematic diagram of the sensor test principle in the shield machine core component detection method provided in the embodiment of the present invention; Figure 4 Schematic diagram of the PLC module test principle in the shield machine core component detection method provided in the embodiment of the present invention; Figure 5 Schematic diagram of the encoder test principle in the shield machine core component detection method provided in the embodiment of the present invention; Figure 6 Schematic diagram of the remote controller test principle in the shield machine core component detection method provided in the embodiment of the present invention; Figure 7 Remote controller test interface provided in the embodiment of the present invention; Figure 8 Comprehensive test and monitoring interface provided in the embodiment of the present invention; Figure 9 Alarm interface provided in the embodiment of the present invention; Figure 10 History interface provided in the embodiment of the present invention; Figure 11 Curve graph interface provided in the embodiment of the present invention; Figure 12 Cloud monitoring platform provided in the embodiment of the present invention; Figure 13 Schematic diagram of the shield machine core component detection device provided in the embodiment of the present invention. Specific embodiments

[0018] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] See Figure 1 , the embodiment of the present invention provides a shield machine core component detection method, including a valve group - sensor test mode, a PLC module test mode, and a DP / NET communication test mode; In the valve group - sensor test mode: Obtain the valve group test action instruction input by the user, control the solenoid valve to be tested by the relay according to the valve group test action instruction, and judge whether the solenoid valve is normal through the valve head light state and action of the solenoid valve; Obtain the 4mA - 20mA sensing signal of the sensor, feedback the 4mA - 20mA sensing signal of the sensor to the host computer, perform preset logical operations through the host computer to obtain a logical operation result, display the logical operation result through the function test area of the host computer, and judge whether the sensor is normal according to the displayed logical operation result; In the PLC module test mode: Take the module under test as a slave station and communicate with the master station control module to perform digital input module testing, digital output module testing, analog input module testing, and analog output module testing; The DP / NET communication test mode includes an encoder test sub - mode and a remote control test sub - mode: Under the encoder test sub - mode, detect whether the encoder is normal; under the remote control test sub - mode, detect whether the remote control is normal.

[0020] See Figure 2 , in this embodiment, in the valve group - sensor test mode, by designing a soft button on the host computer, an input signal is given to the master station PLC. The master station PLC performs logical operations and outputs instructions to control the relay, thereby making the solenoid valve act. Determine whether the solenoid valve needs to be replaced or repaired based on the state of the solenoid valve head light and the action of the solenoid valve. Among them, output action: OutputBit; operation logic result: MputBit; host computer button: ButtonBit; The core implementation code for valve group testing is as follows: "IF MputBit&ButtonBit:=True THEN OutputBit:= True; ELSE OutputBit:= False; END_IF".

[0021] See Figure 3 , in this embodiment, the design principle of sensor testing is to connect the sensor to the master station PLC in the correct wiring manner. When the control loop is turned on, the sensor outputs a 4 - 20ma signal to the master station PLC. The master station PLC feeds back the collected data to the host computer through logical operations and displays the specific values in the function test area of the host computer. Judge the quality of the sensor according to the numerical display. There are many types of sensor signals for shield machines. The test bench uniformly uses 4 - 20ma signals. For sensors with non - 4 - 20ma signals, a conversion module needs to be configured to convert the sensor signal into 4 - 20ma and then connect it to the PLC analog point.

[0022] Among them, in the valve group - sensor test mode, the 4mA - 20mA sensing signal of the sensor is fed back to the host computer, and the formula for obtaining the logical operation result after performing preset logical operations through the host computer is: OUT = [((FLOAT(IN) - K1) / (K2 - K1)) * (HI_LIM - LO_LIM)] In the formula, FLOAT(IN) is the analog - to - digital conversion value of the sensor; K1 is the minimum analog - to - digital conversion value of the signal conversion module; K2 is the maximum analog - to - digital conversion value of the signal conversion module; HI_LIM is the upper limit value of the sensor range; LO_LIM is the lower limit value of the sensor range; OUT is the obtained logical operation result.

[0023] If the sensor is bipolar, the value range is from - 27648 to 27648. At this time, the value of the constant K1 is - 27648.0, and the value of the constant K2 is + 28648.0, that is, ±(4 - 20)mA corresponds to - 27648 to + 27648; if the sensor is unipolar, the value range is from 0 to 27648. At this time, the value of the constant K1 is 0.0, and the value of the constant K2 is + 27648.0, that is, 4 - 20mA corresponds to - 27648 to + 27648. If the value of the parameter IN is greater than the value of the constant K2, the result of the instruction is set to the upper limit value (HI_LIM) and an error is output. If the value of the parameter FLOAT(IN) is less than the value of the constant K1, the result of the instruction is set to the lower limit value (LO_LIM) and an error is output.

[0024] In this embodiment, in the PLC module test mode, when performing the digital input module test, the power supply and relay output are tested through the master station DO control module, and the contact is fed back to the DI module for testing to judge the quality of the DI point; in the PLC module test mode, when performing the digital output module test, the power supply is tested through the master station DO control module, and the output signal is fed back to the master station DI module for testing to judge the quality of the DO point. In the PLC module test mode, when performing the analog input module test, the power supply is tested through the master station DO control module, and then the transmitter outputs a 0 - 10V or 4 - 20mA standard signal, which is fed back to the AI module for testing to judge the quality of the AI channel; in the PLC module test mode, when performing the analog output module test, the power supply is tested through the master station DO control module, and the output signal is fed back to the master station AI module for testing to judge the quality of the AO channel.

[0025] See Figure 4, among which, the developed detection test bench can be used for testing digital and analog input / output modules of S7300 series, ET200MP series, ET200SP series and Beckhoff KL series; in terms of power supply, the modules under test are powered separately in hardware, one way for the main control system, one way for the 1500 modules under test, one way for the ET200SP modules under test, one way for the S7300 modules under test, and one way for the Beckhoff modules under test; each type of module is independently powered, which can ensure that other groups of modules are not affected during the test of a certain type of module; in terms of wiring, Siemens modules are equipped with complete front connectors and base units. When testing a single or a certain type of module, only the front connector of the corresponding module needs to be pulled out, and the body of the corresponding module is replaced. The wiring components do not need to be removed and are used as a whole, avoiding frequent wiring during the test and the risk of module damage caused by wiring problems; a test power supply button is designed to be connected to the digital input of the module to control the test power supply of each type of module, and perform logic interlocking and the indication of the operation indicator light.

[0026] Specifically, in order to test the quality of the shield machine PLC module, the test bench takes the module under test as a slave station. A test power supply button is designed to be connected to the digital input of the module to control the test power supply of each type of module, and perform logic interlocking and the indication of the operation indicator light. When testing the digital input module, the test power supply of the module and the relay output are controlled by the main station DO, and the contact is fed back to the DI module for testing to judge the quality of the DI point; when testing the digital output module, the test power supply of the module is controlled by the main station DO, and the output signal is fed back to the main station DI module for testing to judge the quality of the DO point; when testing the analog input module, the test power supply of the module is controlled by the main station DO, and then the transmitter outputs a standard signal of 0-10V or 4-20ma, which is fed back to the AI module for testing to judge the quality of the AI channel; when testing the analog output module, the test power supply of the module is controlled by the main station DO, and the output signal is fed back to the main station AI module for testing to judge the quality of the AO channel.

[0027] See Figure 5 , in this embodiment, during the detection of whether the encoder is normal in the encoder test sub-mode: Calibrate the standard source encoder and the test encoder, and set all the angles to zero; Fix the standard source encoder and the test encoder on the encoder tooling; Connect the standard source encoder, the test encoder to the main station PLC for communication; Rotate the shaft of the encoder tooling and observe the angle display on the upper computer; Compare the encoder angles on the upper computer. If the test value is close to and stable with the standard value, the encoder is normal; if the deviation exceeds the set threshold, it is determined that the encoder is abnormal.

[0028] Among them, the design principle of the encoder test is to connect with the CPU through Profibus DP or NET communication mode, convert it into an angle through conversion in the program, and display it on the upper computer. The detection test bench is designed with encoder installation and wiring interfaces, and the same model encoder is selected as the standard source to display data; it is driven by manually rotating the turntable, and the signals of the standard source and the detection module are compared for detection. Set the current angle: α; the status word of the absolute encoder: Zword; the number of encoder steps per revolution: 8192; α = [8192 - (Zword & (8192 - 1)) × 360°] / 8192.

[0029] See Figure 6 , in this embodiment, during the detection of whether the remote control is normal in the remote control test sub-mode: Communicate the test remote control with the master station PLC; Set the normal communication range of the remote control; At the farthest point of the communication range, randomly operate the remote control dials, and observe the status of the corresponding button lights on the remote control test interface of the upper computer. If the corresponding button lights on the remote control test interface of the upper computer respond, the receiver is normal; if the corresponding button lights on the remote control test interface of the upper computer do not respond, continue to shorten the distance between the remote control and the receiver. If the corresponding button lights on the remote control test interface of the upper computer still do not respond all the time, it is determined that the receiver is damaged; if the button lights on the upper computer respond within the set distance range, record the distance value and re-specify the actual communication range; Operate the remote control dials in sequence. If the corresponding function lights on the upper computer remote control are on, the remote control is normal; if the corresponding function lights on the upper computer remote control are not on, it is determined that the dials are damaged.

[0030] Among them, the design principle of the remote control test is to connect with the CPU through Profibus DP or NET communication mode, assemble the digital quantity signals of the machine (such as the reset button, start / stop button, oil cylinder control button, etc.), and its input signal can be directly converted into Q points in the program, and the function area of the remote control button lights is designed on the upper computer interface. During the test, randomly operate the remote control buttons, and judge whether the functions of the remote control are normal through the status of the button lights on the upper computer.

[0031] See Figure 7 , in a possible embodiment, the upper computer is configured with a remote control test interface, and the function area of the remote control button lights is designed in the remote control test interface. During the test, randomly operate the remote control buttons, and judge whether the functions of the remote control are normal through the status of the button lights on the upper computer.

[0032] See Figure 8, in a possible embodiment, the host computer is configured with a comprehensive test and monitoring interface, which is used to test and control the valve group, sensors and encoders. The comprehensive test and monitoring interface includes a valve group test area, a sensor test area and an encoder test area. Among them, the valve group test area: the host computer designs soft buttons to control the action of the test solenoid valve. Sensor test area: display the specific values of the sensors to be measured, and judge whether the sensors are qualified according to the displayed data. Encoder test area: display the test angles of the standard source and the encoder to be measured, and judge whether the encoder is qualified according to the displayed data comparison.

[0033] See Figure 9 , in a possible embodiment, the host computer is configured with an alarm interface, which is used to display the alarm and fault signals issued during operation. By immediately displaying the alarm and fault signals issued during operation, it is convenient for operators and maintenance personnel to obtain the equipment working status and abnormal information in a timely manner. When any abnormality occurs in the equipment, the panel buzzer emits an alarm prompt sound, and the corresponding alarm content will appear on the alarm interface. In the case where the fault has not been eliminated, if the reset button is pressed, the buzzer will stop the alarm prompt, but the corresponding alarm content appearing on this page will not disappear. However, when the fault is eliminated, press the reset button on the panel, and both the prompt sound and the corresponding information will be eliminated. At this time, press the "Alarm History" button to query all the information entries that have been alarmed.

[0034] See Figure 10 , in a possible embodiment, the host computer is configured with a history interface, which is used to record the operation parameters. By recording the parameters within 24 hours, it is convenient for operators to count the operation parameters.

[0035] See Figure 11 , in a possible embodiment, the host computer is configured with a curve graph interface, which is used to depict the real-time curve of the given parameters and reflect the parameter change trend. By depicting the real-time curve of the detected parameters, the change trend of the relevant parameters can be intuitively reflected. The operator can select any parameter and any time period, and the software will draw different curves on the same interface for comparison accordingly.

[0036] See Figure 12 , in a possible embodiment, through the establishment of the cloud platform, the data during the test process can be extended to everyone who needs the data, and the operation data and historical data can be viewed at any time through the mobile phone.

[0037] See Figure 13 , the present invention also provides a detection device for the core components of a shield machine, which is used for a detection method for the core components of a shield machine in the above embodiment, including a detection platform, and the detection platform is configured with: The host computer is used to display or operate the specified test functions. The encoder test tooling is used to fix and detect the encoder to be tested. The remote control test area is used to detect the remote control in the remote control test sub - mode. The master station PLC is used to communicate with the remote control and encoder to be tested. The PLC module test area is used to test the digital input module, digital output module, analog input module and analog output module of the PLC.

[0038] In a possible embodiment, the core component detection device of the shield machine is movable and can be conveniently moved to the module to be tested, which increases the flexibility of the device use, is applicable to the test work of modules in different positions, reduces operations such as module handling, and improves the test efficiency.

[0039] In a possible embodiment, the core component detection device of the shield machine is designed with wire trough through - holes. The module connection wires can be routed from the backplane to the front panel, avoiding the installation of wire troughs on the front panel, making the appearance of the device cleaner and more beautiful. At the same time, this wiring method is also beneficial to the arrangement and maintenance of the lines.

[0040] In a possible embodiment, the core component detection device of the shield machine is equipped with a display, which enables the user to observe the situation of the module and the status of each channel on the software from all directions, facilitating real - time monitoring and grasping of the equipment operation and test status, and timely discovering and handling problems.

[0041] The core component detection device of the shield machine is designed with an encoder installation tooling, which can fix the encoder during the encoder test, ensure the stability of the encoder during the test, and make the test smoother and more accurate.

[0042] In a possible embodiment, the module installation adopts a vertical plate hanging installation and is fixed on the module installation guide rail. This installation method is convenient for the disassembly and installation of the module, and is more convenient and fast during operations such as module replacement and maintenance, saving time and labor costs.

[0043] In summary, the present invention is provided with a valve group - sensor test mode, a PLC module test mode, and a DP / NET communication test mode; in the valve group - sensor test mode: obtain the valve group test action instruction input by the user, control the solenoid valve to be tested of the relay to act according to the valve group test action instruction, and judge whether the solenoid valve is normal through the valve head light state and action of the solenoid valve; obtain the 4mA - 20mA sensing signal of the sensor, feedback the 4mA - 20mA sensing signal of the sensor to the host computer, obtain the logical operation result through preset logical operation by the host computer, display the logical operation result through the function test area of the host computer, and judge whether the sensor is normal according to the displayed logical operation result; in the PLC module test mode: use the module to be tested as a slave station to communicate with the master station control module to perform digital input module test, digital output module test, analog input module test, and analog output module test; the DP / NET communication test mode includes an encoder test sub - mode and a remote control test sub - mode: in the encoder test sub - mode, detect whether the encoder is normal; in the remote control test sub - mode, detect whether the remote control is normal. During the detection of whether the encoder is normal in the encoder test sub - mode: calibrate the standard source encoder and the test encoder, and set all angles to zero; fix the standard source encoder and the test encoder on the encoder tooling; communicate and connect the standard source encoder, the test encoder with the master station PLC; rotate the encoder tooling shaft and observe the angle display on the host computer. During the detection of whether the remote control is normal in the remote control test sub - mode: communicate the test remote control with the master station PLC; set the normal communication range of the remote control; at the farthest distance within the communication range, randomly operate the remote control dials, and observe the state of the corresponding button lights on the host computer remote control test interface. If the corresponding button lights on the host computer remote control test interface respond, the receiver is normal; if the corresponding button lights on the host computer remote control test interface do not respond, continue to shorten the distance between the remote control and the receiver. If the corresponding button lights on the host computer remote control test interface still do not respond all the time, it is determined that the receiver is damaged; if the host computer button lights respond within the set distance range, record the distance value and re - specify the actual communication range; operate the remote control dials in sequence. If the corresponding function lights on the host computer remote control are on, the remote control is normal; if the corresponding function lights on the host computer remote control are not on, it is determined that the dials are damaged. The present invention can detect the electrical core components of the shield machine before the whole machine assembly, discover quality problems and assembly problems in advance, troubleshoot faults in time, and ensure the quality and efficiency during the whole machine joint debugging.

[0044] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made thereto based on the present invention, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of the present invention claimed.

Claims

1. A method for detecting core components of a shield machine, characterized in that: Including valve group-sensor test mode, PLC module test mode and DP / NET communication test mode; In the valve group-sensor test mode: Obtaining a valve group test action instruction input by a user, controlling the action of a solenoid valve to be tested by a relay according to the valve group test action instruction, and judging whether the solenoid valve is normal by the state and action of a valve headlight of the solenoid valve; Acquire a 4mA-20mA sensor signal of the sensor, feed back the 4mA-20mA sensor signal of the sensor to a host computer, obtain a logic operation result after performing a preset logic operation by the host computer, display the logic operation result through a function test area of ​​the host computer, and judge whether the sensor is normal according to the displayed logic operation result; In the PLC module test mode: The module under test is used as a slave station to communicate with the master station control module to perform digital input module testing, digital output module testing, analog input module testing and analog output module testing; The DP / NET communication test mode includes an encoder test sub-mode and a remote control test sub-mode: In the encoder test sub-mode, whether the encoder is normal is detected; in the remote control test sub-mode, whether the remote control is normal is detected.

2. A method for detecting core components of a shield machine according to claim 1, characterized in that: In the valve group-sensor test mode, the 4mA-20mA sensor signal of the sensor is fed back to the host computer, and the host computer performs a preset logic operation to obtain the formula of the logic operation result: OUT=[((FLOAT(IN)-K1) / (K2-K1))*(HI_LIM-LO_LIM)] In the formula, FLOAT(IN) is the analog-to-digital conversion value of the sensor; K1 is the minimum analog-to-digital conversion value of the signal conversion module; K2 is the maximum analog-to-digital conversion value of the signal conversion module; HI_LIM is the upper limit of the sensor range; LO_LIM is the lower limit of the sensor range; OUT is the result of the logical operation.

3. A shield machine core component detection method according to claim 2, characterized in that: In the PLC module test mode, when executing the digital input module test, the power supply and relay output are tested through the master station DO control module, and the contact is fed back to the DI module for testing to determine whether the DI point is good or bad; In the PLC module test mode, when executing the digital output module test, the power supply is tested through the master station DO control module, and the output signal is fed back to the master station DI module for testing to determine the quality of the DO point.

4. A shield machine core component detection method according to claim 3, characterized in that: In the PLC module test mode, when executing the analog input module test, the main station DO control module is used to test the power supply, and then the transmitter outputs a 0-10V or 4-20mA standard signal, which is fed back to the AI ​​module for testing to determine the quality of the AI ​​channel; In the PLC module test mode, when executing the analog output module test, the power supply is tested through the master station DO control module, and the output signal is fed back to the master station AI module for testing to determine the quality of the AO channel.

5. A shield machine core component detection method according to claim 1, characterized in that: In the encoder test sub-mode, during the process of detecting whether the encoder is normal: Calibrate the standard source encoder and the test encoder, and set all angles to zero; Fix the standard source encoder and the test encoder on the encoder fixture; Connect the standard source encoder, test encoder and master station PLC for communication; Rotate the encoder tooling shaft and display the angle on the host computer; Compare the encoder angle of the host computer. If the test value is close to the standard value and stable, the encoder is normal. If the deviation exceeds the set threshold, the encoder is judged to be abnormal.

6. A shield machine core component detection method according to claim 1, characterized in that: In the remote control test sub-mode, during the process of detecting whether the remote control is normal: Make the test remote controller communicate with the master station PLC; Set the normal communication range of the remote control; At the farthest point in the communication range, operate the remote control dial at will and observe the status of the corresponding button light on the host computer remote control test interface. If the corresponding button light on the host computer remote control test interface responds, the receiver is normal. If the corresponding button light on the host computer remote control test interface does not respond, continue to shorten the distance between the remote control and the receiver. If the corresponding button light on the host computer remote control test interface does not respond, the receiver is considered damaged. If the host computer button light responds within the set distance range, record the distance value and redefine the actual communication range. Operate the buttons on the remote control in sequence. If the corresponding function light on the host remote control is on, the remote control is normal. If the corresponding function light on the host remote control is off, the buttons are considered damaged.

7. A method for detecting core components of a shield machine according to claim 1, characterized in that: The host computer is equipped with a remote control test interface, in which a remote control button light function area is designed. During the test, any remote control button is operated to determine whether the remote control function is normal based on the status of the host computer button light.

8. A shield machine core component detection method according to claim 1, characterized in that: The host computer is equipped with a comprehensive test monitoring interface, which is used to test and control the valve group, sensor and encoder. The comprehensive test monitoring interface includes a valve group test area, a sensor test area and an encoder test area.

9. A method for detecting core components of a shield machine according to claim 1, characterized in that: The host computer is equipped with an alarm interface, which is used to display alarm and fault signals issued during operation; The host computer is configured with a history interface, and the history interface is used to record the operating parameters; The host computer is configured with a curve chart interface, and the curve chart interface is used to draw a real-time curve of a given parameter to reflect the parameter change trend.

10. A shield machine core component detection device, used in a shield machine core component detection method according to any one of claims 1 to 9, characterized in that: It includes a detection platform, and the detection platform is configured with: Host computer, used to display or operate the specified test function Encoder test fixture, used to perform fixed detection on the encoder to be tested; Remote control test area, used to test the remote control in the remote control test sub-mode; The master station PLC is used to communicate with the remote controller and encoder to be tested; The PLC module test area is used to test the PLC's digital input module, digital output module, analog input module and analog output module.

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